请问solaris8下怎样offline 一个cpu，然后又怎么online回去？

marlboro5460

请问solaris8下怎样offline 一个cpu，然后又怎么online回去？
需要重启机器吗？

woh

psradm -f cpu-id

williamw2000

"psadm -f cpu-id"
What would happen if something is running on that CPU?

guchengman

[quote]原帖由 "woh"]psradm -f cpu-id[/quote 发表：


具体也没有去试,
参考一下吧.

prsradm -f procid 将处理器procid设为离线.
-n 让指定处理器在线.
-a 作用于所有处理器.
-v 对每次操作尝试的结果显示一条信息.

只有超级用户和系统管理员才能执行这条命令,
如果有LWP被绑定在某处理器上,那么该处理器不能设为离线.

mmmmn

好象老外都使用psrset命令吧

rocazj

1、psradm - change processor operational status
     The  psradm utility changes the operational status  of  pro-
     cessors.  The  legal  states  for the processor are on-line,
     off-line, and no-intr.

     An on-line processor processes LWPs (lightweight  processes)
     and may be interrupted by I/O devices in the system.

     An off-line processor does not process any LWPs. Usually, an
     off-line  processor  is  not interruptible by I/O devices in
     the system.  On some processors or under certain conditions,
     it may not be possible to disable interrupts for an off-line
     processor. Thus, the actual effect  of  being  off-line  may
     vary from machine to machine.

     A no-intr processor processes LWPs but is not  interruptible
     by I/O devices.

     -i    Set the specified processors no-intr.

     -n    Bring the specified processors on-line.

     -v    Output a message giving the results of each  attempted
           operation.